Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NT1O callsign genealogy
Currently held by BOYER, DAVID M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by NT1O's current licensee, walking backwards.
- Tardif, Gerard RCTgranted 2020-05-21cancelled 2020-06-26
Successor callsigns
Callsigns held now by people who previously held NT1O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NT1O, oldest first.
- BOYER, DAVID M VT2008-02-26 → cancelled 2018-05-21
- Tardif, Gerard R CT2020-06-26 active